LMC6482 Operational Amplifiers

By Texas Instruments 70

LMC6482 Operational Amplifiers

Texas Instruments' LMC6482 device provides a common-mode range that extends to both supply rails. This rail-to-rail performance combined with excellent accuracy, due to a high CMRR, makes it unique among rail-to-rail input amplifiers. The device is ideal for systems, such as data acquisition, that require a large input signal range. The LMC6482 is also an excellent upgrade for circuits using limited common-mode range amplifiers such as the TLC272 and TLC277.

Maximum dynamic signal range is assured in low voltage and single supply systems by the rail-to-rail output swing of the LMC6482. The rail-to-rail output swing is ensured for loads down to 600 Ω of the device. Ensured low-voltage characteristics and low-power dissipation make the LMC6482 especially well-suited for battery-operated systems. LMC6482 is also available in a VSSOP package, which is almost half the size of a SOIC-8 device. See the LMC6484 data sheet for a quad CMOS operational amplifier with these same features.

Features
  • Typical unless otherwise noted
  • Rail-to-rail input common-mode voltage range (ensured over temperature)
  • Rail-to-rail output swing (within 20 mV of supply rail, 100 kΩ load)
  • Ensured 3 V, 5 V, and 15 V performance
  • Excellent CMRR and PSRR: 82 dB
  • Ultra-low input current: 20 fA
  • High voltage gain (R L = 500 k Ω): 130 dB
  • Specified for 2 kΩ and 600 Ω loads
  • Power-good output
  • Available in VSSOP package
Applications
  • Data acquisition systems
  • Transducer amplifiers
  • Hand-held analytic instruments
  • Medical instrumentation 
  • Active filters, peak detectors, sample and hold, pH meters, current sources
  • Improved replacement for TLC272 and TLC277

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